[all-commits] [llvm/llvm-project] 4f8034: [X86][SSE] Add tests for permute(phaddw(phaddw(x, y...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f80340fb6712f5f1e97e7667bfd5cffa7d684b7
      https://github.com/llvm/llvm-project/commit/4f80340fb6712f5f1e97e7667bfd5cffa7d684b7
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-05-11 (Tue, 11 May 2021)

  Changed paths:
    M llvm/test/CodeGen/X86/horizontal-shuffle-4.ll

  Log Message:
  -----------
  [X86][SSE] Add tests for permute(phaddw(phaddw(x,y),phaddw(z,w))) -> phaddw(phaddw(),phaddw()) folds.

We currently only fold if NumEltsPerLane == 4